@book{25778,
	author = {Woolsey, Lester Hood, and Richards, Ralph Webster,},
	title = {The Bull mountain coal field, Musselshell and Yellowstone counties, Montana,},
	publisher = {Govt. Print. Off.,},
	year = {1917.},
	address = {Washington,},
	note = {At head of title: Department of the interior.}
}